\documentclass[answers,12pt]{exam}
\usepackage{amsmath,amssymb,epsfig}
% THEOREM Environments ---------------------------------------------------
\newtheorem{thm}{Theorem}
\newtheorem{cor}{Corollary}
\newtheorem{lem}{Lemma}
\newtheorem{prop}{Proposition}
\usepackage{latexsym}
\usepackage{amssymb}
\usepackage{epsf}
\usepackage{epsfig}
\usepackage{fontenc}
\usepackage{graphics}
\usepackage{amsfonts}
\usepackage{amsmath}
\usepackage[francais]{babel}
\usepackage[utf8]{inputenc}

\topmargin 0pt \headheight 23pt \headsep 24.66pt

%\topmargin 11pt \headheight 12pt \headsep 13.66pt

\parindent = 3mm
\newtheorem{Exercice}{Exercice}
\newenvironment{exo}{\begin{Exercice}$\;\\$}
{\end{Exercice}}
\def\E{\mathbb{E}}\def\V{\mathbb{V}}
\def\K{\mathbb{K}}\def\R{\mathbb{R}}\def\C{\mathbb{C}} \def\Z{\mathbb{Z}}\def\Q{\mathbb{Q}}\def\D{\mathbb{D}}\def\N{\mathbb{N}}
\def\F{\mathcal{F}}\def\M{\mathcal{M}}\def\S{\mathcal{S}}\def\A{\mathcal{A}}\def\B{\mathcal{B}}\def\P{\mathcal{P}}


\begin{document}
\lhead{IUT2 - Département informatique}
\rhead{Année universitaire }

\begin{center}

{\vspace{1cm}}{!!!!CATEGORIE!!!! - !!!!TITRE!!!!}

\end{center}

\vspace*{1cm}